In RF design when antennas are used it is said that the antennas require a larger ground reference.If they have suggested a ground reference and if we are using a smaller one than recommended will it effect the performance so badly?
Also while we are designing if we have a GPS antenna which requires a 50*50 mm ground plane and a 4G antenna which also obviously require a large ground plane, can we do such that we can share the ground plane for both the antenna? will it affect the performance?
we are pouring ground plane on the top layer and also on the layer beneath it so is it enough ?
we cant increase the board size much since it is also a constraint